Africanized HBs

Question 1

Stinging incidents of AHBs in mexico

Answer 1

• > 500 killed, 1000s of animals
• in 1996, beekeepers took more measures after
• harmed beekeeping bc depend on borrowed land, farmers didn’t want aggressive bees on land
  Mexico managed 44k hives, went bankrupt bc no land available

Question 2

Honey production _____ in countries with AHB because honey is not _____ and there is a lot of ________

Answer 2

dec
stored
swarming

Question 3

Mexico had a ___% decrease

Answer 3

25%

Question 4

Hybrid european/ahb colonies produce more or less honey

Answer 4

more

Question 5

How did the management of AHBs chabge

Answer 5

usedto be kept on side of road, horses/walkers were stung, pre Africanized, hives were kept beside houses, now, in more remote sites, spread apart
- more money was spent on queen replacement (gentler queen was chosen)
- more sugar for artificial feeding, preventing absconding
Robbing is increased in AHBS but disease resistance is decreased

Question 6

Why are AHBs more disease resistant

Answer 6

more hygienic behaviour (detect odour, remove brood from cell)
more grooming (scrap off mites)
inhibit pathogen reproduction

Question 7

AHB impact on pollination

Answer 7

ahb mortality and absconding rate increased with transportation bc higher stress
some species of plants benefitted
similar pollination as EHB

Question 8

Collect more or less pollen/propolis

Answer 8

more, better markets

Question 9

Comparative advantages of EHB vs AHB

Answer 9

EHB: 10 (gentle, more honey, manageable, etc)
AHB: 4 (resistance, pollen/prop, queen laying capacity)
- many countries use hybrids

Question 10

How are we trying to reduce defensiveness of AHBs

Answer 10

introducing european genes into their populations

Question 11

Can selective breeding inc honey yield and decrease defensive behaviour?

Answer 11

yes, selectively bred carniolan + local AHBs= higher honey prod
local unselected = lowest
gentlest was Italian and carniolan

Question 12

AHB werea a result of __ ecotypes, that evolved in 2 very different _______. They are successful _______. and _____ suitable for beekeeping

Answer 12

2
environments
invaders
not (swarm, sting, expensive)

Question 13

2 management tools for AHBs

Answer 13

queen replacement
breeding

Question 14

future impact in NA

Answer 14

negative but less severe
economic impact; pollination, keeping costs, liability
health; moderate
perception; moderate
biodiversity; moderate

Question 15

______ x ________ = africanizeed bees

Answer 15

apis mellifera scutellata
apis mellifera

Question 16

how many races recognized

Answer 16

8-10

Question 17

A.m scutellata introduced to______ then _____ and _______

Answer 17

brazil, southest of sahara and to south Africa

Question 18

Name origin of scutellata

Answer 18

yellw thorax

Question 19

nest in sheltered or unsheltered sites

Answer 19

unsheltered

Question 20

Predators of AHBS

Answer 20

humans, ants, honey badgers, birds

Question 21

SE africa climate and bee flora

Answer 21

hot, dry, unpredictable rain
scattered flora, seasonal but present year-round –> high migration rates, swarming, reproduction

Question 22

climate in europe

Answer 22

warm summer, cold winter
abundant and uniform flora, present in spring.summer
few predators, humans only bc they select them for gentleness
seasonal reprod, food store, thermoregulation
pre